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Tim Fitzhigham meets the humans who defy science and puts their powers to the test - against himself.
Wim Hof - Extreme Cold
Anthony Kelly - Extreme Reactions
Andy Green - Extreme G-Force
Luci Romberg - Extreme Agility
Dean Karanzes - Extreme Stamina
Eskil Ronningsbakken - Extreme Balance
Juan Ruiz - Extreme Echolocation
Sara Campbell - Extreme Diving
Alain Robert - Extreme Climbing
Kristin Rhodes - Extreme Strength
